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Nairaland Forum / Entertainment / TV/Movies / Satellite TV Technology / Solar Energy, A Complement To FTA (2258893 Views)
UPS Back-up, Also A Complement To FTA / FTA Frequency / Cctv Installation A Complement To Fta And Solar Energy (2) (3) (4)
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Re: Solar Energy, A Complement To FTA by bbally: 5:29pm On Feb 13, 2021 |
please, anyone with used solar panels in usable condition for sale within lagos at reasonable/fair price should let me know. I want to use it for a 12volt system. 1 Like |
Re: Solar Energy, A Complement To FTA by wilmaria14: 7:07am On Feb 14, 2021 |
bbally:I have sir drop me a message sir with d best price u can not get out side |
Re: Solar Energy, A Complement To FTA by odimbannamdi(m): 7:39am On Feb 14, 2021 |
anjilgreat: Thanks for the mention, sis 1 Like |
Re: Solar Energy, A Complement To FTA by ojeysky(m): 6:29pm On Feb 14, 2021 |
ojeysky: Still available |
Re: Solar Energy, A Complement To FTA by kiekie1(m): 9:09pm On Feb 14, 2021 |
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Re: Solar Energy, A Complement To FTA by netotse(m): 9:38pm On Feb 14, 2021 |
Hi Guys, Does anyone know where I can find a 48VDC contactor in lagos? I'm look for a cheap way to maximize/prioritize my solar use and want to use a relay-contactor combo. I will set an under voltage relay to close when battery voltage is, at say, 50V and supply the coils of the contactor which will then close and supply AC to charge the batteries through the inverter, so as long as voltage is above 50V, relay(and therefore contactor) should be open and you are using the panels to power your house. This should mean that you don't need to be manually switching of AC power supply to maximise solar. The relay is easy to find but the 48 VDC coil contactor is what I have been looking for, does anyone here know how I can find one? I'm also open to suggestions on easier ways to achieve this. BR 2 Likes |
Re: Solar Energy, A Complement To FTA by kiekie1(m): 9:50pm On Feb 14, 2021 |
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Re: Solar Energy, A Complement To FTA by adrusa: 11:50pm On Feb 14, 2021 |
netotse: Find a relay rated for your intended current range. You can always use a converter to supply the relay coil with appropriate DC voltage. I have a similar setup between my battery banks. The bank is 48v 200A but the relay coil is 12v. So, I got a step down to power the relay. It is working well with some limitations due to the fact that one of my battery banks is lithium. Edit: I read what you wanted again. Why do you need a 48v relay? I have a similar setup to what you are trying to achieve, but mine is controlled by my home automation using homeassistant. The State of Charge (SOC) of my battery and the voltage is fed into the homeassistant through Victron BMV. Any voltage sensor can also do the same. The SOC and Voltage then trigger a normal ac/dc relay to supply AC to the inverter if I need extra juice especially on days my batteries were not filled during the day. |
Re: Solar Energy, A Complement To FTA by justcallmenuel(m): 11:33am On Feb 15, 2021 |
Thanks to y’all and God bless!
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Re: Solar Energy, A Complement To FTA by wilmaria14: 11:33am On Feb 15, 2021 |
What are your budget for a solar system? No matter how small that budget is wilmaria global solar energy will make it happen we are just a phone call away 09013128166 1 Like
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Re: Solar Energy, A Complement To FTA by justcallmenuel(m): 11:34am On Feb 15, 2021 |
200w SMS floodlights with double panels still available, #35,000. Call/WhatsApp us on 08168986461
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Re: Solar Energy, A Complement To FTA by justcallmenuel(m): 11:36am On Feb 15, 2021 |
40w Felicity All in One solar street lights still available, #80,000. Call/WhatsApp us on 08168986461
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Re: Solar Energy, A Complement To FTA by justcallmenuel(m): 11:37am On Feb 15, 2021 |
150watt DC iron still available, #10,000. Call/WhatsApp us on 08168986461
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Re: Solar Energy, A Complement To FTA by justcallmenuel(m): 11:38am On Feb 15, 2021 |
150w rubitec solar panel now available, #21,000. Call/WhatsApp us on 08168986461
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Re: Solar Energy, A Complement To FTA by justcallmenuel(m): 11:40am On Feb 15, 2021 |
2.3kva 24v microtek inverter still available, #95,000. Call/WhatsApp us on 08168986461
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Re: Solar Energy, A Complement To FTA by justcallmenuel(m): 11:44am On Feb 15, 2021 |
60A epever mppt charge controller available, #145,000. Call/WhatsApp us on 08168986461
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Re: Solar Energy, A Complement To FTA by justcallmenuel(m): 11:45am On Feb 15, 2021 |
80A epever MPPT charge controller available, #170,000. Call/WhatsApp us on 08168986461
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Re: Solar Energy, A Complement To FTA by kiekie1(m): 12:19pm On Feb 15, 2021 |
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Re: Solar Energy, A Complement To FTA by IYGEAL(m): 12:29pm On Feb 15, 2021 |
UPDATE Turns out the problem with my lithium set up was apparently the low input power from my pv array and/or the wiring. Yesterday, I did two things. 1. I previously used 2.5mm Comester cable to run the PV to CC connection on 8s1p arrangement. So, I still used the same cable, but being a 3-strand wire, I used two strands to run the +ve terminal and the other strand for the -ve. 2. I left the battery unused after it dropped to 26.4v as usual, having fluctuated between 26.4 and 26.8v all day. So when I put it back to charge, it crossed the 26v mark and into 27 to 29+. At a point, it reached 30v, which prompted me to change the bulk voltage to 29v. At these high voltage range, and with the sun very bright, the input current decreased to some milliamps (I think at this point the battery was fully charged). I reduced the bulk to 28.4V and float to 27.2V At the end of the day, the battery rested at 26.8V. @Ojesky hinted my panels may not be charging the battery enough. I think that's correct. Many thanks to Ojesky and @EarthRealm for your inputs and suggestions. I'd be leaving the settings at Bulk Voltage = 28.4V and Float at 27.2V. I hope these are not high. 1 Like |
Re: Solar Energy, A Complement To FTA by earthrealm(m): 4:50pm On Feb 15, 2021 |
Great news. Whats the distance panel to cc?. 8s1p?.....u using a hybrid inverter? Guess you mean absorb, most cc, bulk voltage isnt editable, only float and absorb IYGEAL: |
Re: Solar Energy, A Complement To FTA by ojeysky(m): 4:59pm On Feb 15, 2021 |
IYGEAL: Folks quote my moniker wrongly so sorry if I don't respond. To your question, from all indication it seem you inverter does not have the float bug? Since that is the case I will set bulk at between 27.6 and .8 while float will remain at 27v. When you make that settings check the inverter to confirm if it passes the 27v while charging |
Re: Solar Energy, A Complement To FTA by abbeymighty(m): 7:50pm On Feb 15, 2021 |
Please house, I need review on ipowerplus 3kva hybrid inverter. Urgent please |
Re: Solar Energy, A Complement To FTA by Namzy(m): 8:00pm On Feb 15, 2021 |
abbeymighty:Good inverter been using mine for 2 yrs plus although I opted for a standalone mppt as the recommended 600w max mppt it came with is small. Pros: low standby power usage mine is about 25 to 30w. Enough settings to satisfy your need like user low voltage disconnect, powering loads from battery or external mppt even when nepa is available and switching to nepa at certain voltage. About 25a [20 to 30] charging current better than most Indian inverters Cons: it does not have equalization, fan noise at loads above 200w and a times enters float at about 86% charge a work around is to set your float voltage a lil higher. My parents 5kva ipowerplus is still going strong 5 years and counting and they are using the inbuilt mppt combined with an external Felicity mppt 1 Like |
Re: Solar Energy, A Complement To FTA by abbeymighty(m): 9:21pm On Feb 15, 2021 |
Namzy:please what is the maximum solar panel that I can connect? I have 4 * 200ah battery. Thanks |
Re: Solar Energy, A Complement To FTA by justcallmenuel(m): 9:29pm On Feb 15, 2021 |
10mm dual core solar cable available, #950 per metre, Call/WhatsApp us on 08168986461
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Re: Solar Energy, A Complement To FTA by Trippledots(m): 5:12am On Feb 16, 2021 |
omotoda: Idk if this is still relevant, but are your night loads all energy efficient? If you can replace non energy efficient gadgets with energy efficient ones, it will really help. I am running two sets of used100ahr/12v & a 150ahr all parallel system. Bought different times from different sellers. My charging isn't very optimized but my load on them is so light that the batteries are still going strong 2yrs+ Note that during the dayi am not at home so daytime load is zero. |
Re: Solar Energy, A Complement To FTA by Trippledots(m): 5:19am On Feb 16, 2021 |
anjilgreat: Anderson connectors will work. 1 Like |
Re: Solar Energy, A Complement To FTA by Trippledots(m): 6:12am On Feb 16, 2021 |
netotse: Would this beefy relay work? Might simplify your design a lot more. https://www.nairaland.com/390522/solar-energy-complement-fta/492#74517252 |
Re: Solar Energy, A Complement To FTA by ceaser: 6:42am On Feb 16, 2021 |
IYGEAL: * Are the cells used for the pack new cells? * DANGER - 23.7v as LVD cutoff for the pack isn't advisable. Lithium though more than Lead acid is usually forgivable of deep discharges, it still has undesirable deleterious effects on the life span. I'll advice you try 24.4v LVD if you still insist on juicing it a little more on daily basis. * As per the charging issues, it may be due to insufficient panels, in sufficient energy inflow from poorly insolated panels, poor and inefficient cabling/wire guage from panels to SCC, or the use of PWM SCC for a large LFP set up. I have experienced the last issue before. The pack will not go beyond the 26.3v mark, at best 26.6v on the set up. The panels (1280w installed capacity) were apparently sufficient for the 24v/100ah battery but since the MPPT SCC shipping was slowed down, I made do with 60A PWM SCC. This problem is made worse if you have load on the inverter while the sun is charging. This means that you may be able to get by with a PWM arrangement if there's no load on the system so that all panel powers gets dumped directly into the LFP pack. Since I used PWM CC, I also noticed that the wires get hot (energy losses), that also disappeared with the change to MPPT. The moment I changed the CC to MPPT and appropriately re-configured the panel, battery hits 28v by noon. Also, while discharging, it discharges gradually from 26.4v but rapidly from around 25.4v to cut off at 23.7 (as I set it). As per your lithium battery discharge curve, that looks like the normal discharge curve to me. Assuming your battery was fully charged (above the 26.6v mark), you would have enjoyed the discharge curve (after sundown) stay a long time on the 26.4v to 26.0v. Rapid discharge phase on the curve should start at around 25.0v, depending on the load on the system. Finally, since you suspect that the in-built CC of the inverter may not efficiently charge your pack, I will suggest you try using an external MPPT CC. You also have the added advantage of more flexibility to tweak things to favour your battery pack. IYGEAL: Just read to this point. Glad you got saved nuturing a terrible bias against LFP. Enjoy your pack. |
Re: Solar Energy, A Complement To FTA by justcallmenuel(m): 6:47am On Feb 16, 2021 |
Felicity mppt charge controllers still available. 60A - 80,000 80A - 95,000 100A - 120,000 120A - 130,000. Call/WhatsApp us on 08168986461
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Re: Solar Energy, A Complement To FTA by justcallmenuel(m): 6:48am On Feb 16, 2021 |
3kva and 5kva MUST hybrid inverter still available in stock. 3kva 24v is 185k 5kva 48v is 285k Call/WhatsApp us on 08168986461
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